Meteorite

From Tardis Wiki, the free Doctor Who reference

An meteorite is an object from space, usually rock, that survives an impact with Earth's surface. Some fraction of them are vectors for alien energies and/or entities.

Elizabeth Shaw was an expert on meteorites. (DW: Spearhead from Space)

Known Meteorites

In the 1970s, the Nestene Consciousness fashioned plastic meteorites and sent them to Earth to prepare for an invasion. (DW: Spearhead from Space)

Meteorite